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7,120 recruiting studies with US sites, from the official ClinicalTrials.gov registry (refreshed Oct 26, 2026). No sign-up needed.
Most recently updated studies · page 18 of 297
- RecruitingHealthy volunteersOvernight stay mentioned
End Diagnostic Overshadowing
Rush University Medical Center
- Location
- Chicago, IL
- Eligibility basics
- Ages 3–89
- RecruitingHealthy volunteersPhase 1/Phase 2
Novel Biomarkers of Non-IgE Immediate Hypersensitivity Drug Reactions
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1/Phase 2
Retina is a Marker for Cerebrovascular Heath
Mayo Clinic
- Location
- Jacksonville, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1/Phase 2
Double-blind Placebo Controlled Study to Evaluate the Effect of NAD+ Boosting With Nicotinamide Riboside on Immunometabolism and Immunity in Systemic Lupus Erythematosus
National Heart, Lung, and Blood Institute (NHLBI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–120 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Oxidative Stress in Microvascular Dysfunction Following Gestational Diabetes
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Role of ET-1, Physical Activity, and Sedentary Behavior in Microvascular Dysfunction Following GDM
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Antidepressant Therapy for Improved Blood Vessel Health After Preeclampsia
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Sex Disparities in Hypoxic Vasodilation and Impact of Obesity
University of Missouri-Columbia
- Location
- Columbia, MO
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersEarly Phase 1
Endometriosis and Microvascular Dysfunction: Role of Inflammation
Penn State University
- Location
- University Park, PA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersPhase 1
Pharmacogenetics of Response to GLP1R Agonists
University of Maryland, Baltimore
- Location
- Lancaster, PA
- Eligibility basics
- Ages 18–89
- RecruitingHealthy volunteersPhase 1
A Phase 1 Study of 99mTc-p5+14 in Healthy Volunteers and Patients With AL or ATTR Systemic Amyloidosis
University of Tennessee Graduate School of Medicine
- Location
- Knoxville, TN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
Mifepristone vs Misoprostol
Montefiore Medical Center
- Location
- The Bronx, NY
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersPhase 1/Phase 2
Effects of Psilocybin on Electrophysiology and the Dynamic Content of Thought
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteersOvernight stay mentioned
The Osteoarthritis Prevention Study
Wake Forest University
- Location
- Boston, MA + 1 other US site
- Eligibility basics
- Ages 50+ · Women only
- RecruitingHealthy volunteersPhase 1
Blackcurrants Modify Gut Microbiota and Reduce Osteoporosis Risk in Postmenopausal Females
University of Connecticut
- Location
- Storrs, CT
- Eligibility basics
- Ages 45–70 · Women only
- RecruitingHealthy volunteersPhase 1/Phase 2
Hyperemesis Gravidarum Risk Reduction With Metformin
University of Southern California
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18–49 · Women only
- RecruitingHealthy volunteersPhase 1
Safety, Tolerability, and Bioeffects of Alirocumab in Non-treatment Seeking Heavy Drinkers
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteersEarly Phase 1
PK/PD of Oral and Vaporized Delta-9-Tetrahydrocannabinol (THC) in Older Adults
Yale University
- Location
- West Haven, CT
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteersPhase 1
Thymalfasin (Thymosin Alpha 1; Ta1) as an Enhancer of Vaccine Response Among Older Adults Receiving Booster Doses of COVID-19 Vaccine
The Methodist Hospital Research Institute
- Location
- Houston, TX
- Eligibility basics
- Ages 65–100
- RecruitingHealthy volunteersEarly Phase 1
Restructuring the Alpha-Gamma Code in Aging Vision
Boston University Charles River Campus
- Location
- Boston, MA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Evaluation of the Electronic Cigarette Withdrawal Syndrome
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 21–55
- RecruitingHealthy volunteersEarly Phase 1
Assistance Delivery and Muscle Coordination
The Catholic University of America
- Location
- Washington D.C., DC
- Eligibility basics
- Ages 20–80
- RecruitingHealthy volunteersEarly Phase 1
Mechanistic Studies of Psilocybin in Headache Disorders
Yale University
- Location
- West Haven, CT
- Eligibility basics
- Ages 21–70
- RecruitingHealthy volunteersEarly Phase 1
Optic Nerve Head Strain in Non-glaucoma Subjects
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 30–90
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